/Engine/Source/Editor/BlueprintGraph/Classes/K2Node.h
Sends a message to the owning blueprint's CurrentMessageLog, if there is one available. Otherwise, defaults to logging to the normal channels. Should use this for node actions that happen during compilation!
template<typename... ArgTypes> void Message_Note ( const [FString](API\Runtime\Core\Containers\FString) & Message, ArgTypes... Args ) const